* {
    margin: 0;
    padding: 0;
}
body{
    background: #000;
    background-image: url(../../assert/back.jpg);
    color: #666;
    text-align: center;

}

audio{
    width: 450px;
    margin: 30px 0;
}

.container{
    height: 420px;
    overflow: hidden;
}

.container ul{
    transition: 0.2s;
    list-style: none;
}
.container li{
    height: 30px;
    line-height: 30px;
    transition: 0.2s;

}
.container li.active {
    color: #fff;
    transform: scale(1.6);
}